Date: Tue, 4 Mar 2008 01:59:00 -0800 From: Jeremy Chadwick <koitsu@freebsd.org> To: "Chris H." <chris#@1command.com> Cc: Edwin Groothuis <edwin@mavetju.org>, Mark Andrews <Mark_Andrews@isc.org>, freebsd-stable@freebsd.org, Andy Dills <andy@xecu.net> Subject: Re: What's new on the 127.0.0/24 block in 7? Message-ID: <20080304095900.GC77655@eos.sc1.parodius.com> In-Reply-To: <20080304095246.GA77655@eos.sc1.parodius.com> References: <200803040619.m246Jbja018523@drugs.dv.isc.org> <20080304000320.msp5bfrytc0wsowg@webmail.1command.com> <20080304095246.GA77655@eos.sc1.parodius.com>
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On Tue, Mar 04, 2008 at 01:52:46AM -0800, Jeremy Chadwick wrote: > If you then put another box on the network as 192.168.1.7, and give it a > netmask of 255.255.255.128 (/25), it should not be able to see > 192.168.1.200. Broadcast packets from 192.168.1.7 would be going to > 192.168.1.128 (its "view" of the network would be 192.168.1.0 to > 192.168.1.128). And this is also wrong (off-by-one on the broadcast address). It should have read: > If you then put another box on the network as 192.168.1.7, and give it a > netmask of 255.255.255.128 (/25), it should not be able to see > 192.168.1.200. Broadcast packets from 192.168.1.7 would be going to > 192.168.1.127 (its "view" of the network would be 192.168.1.0 to > 192.168.1.127). This is what I get for handling two MPLS network outages at the same time while trying to write this mail. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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